Lawn sprinkler



H. B. PARKER LAWN SPRINKLER Feb,v v1'5, 1938.

Filed June 29, 1956 mi y " H. E. Panker i www# Patented Feb. 15, 1938 UNITED STATES PATENT QFFECE 1 Claim.

The invention forming the subject matter of this application relates generally to water sprinkling nozzles, and more particularly to nozzles designal for use in spraying water on lawns and the like.

The main object of the invention is to provide a sprinkler or spraying nozzle which is simple in construction, and which can be adjusted to spray water under pressure in quantities ranging from light mists to heavy sheets of water.

Other objects of the invention will become apparent as the detailed 'description thereof proceeds.

In the drawing:

Figure 1 is a perspective'of the sprinkler as attached to a hose;

Figure 2 is a central vertical section through one form of the sprinkler;

Figure 3 is a horizontal section taken on the line 3 3 of Figure 2;

Figure 4 is a central vertical section through a modied form of the invention; and

Figure 5 is a horizontal section taken onY the line 5--5 of Figure 4.

As shown in the drawing, the preferred iorm of the invention comprises a main body 6 internally screwthreaded at one end to receive the coupling 'I of a hose 8. The body 6 is provided with an L-shaped passageway 9 having a restricted aperture IU at the upper end of the vertical portion thereof.

The body 6 is beveled around the aperture I0 to form a seat II. A supporting rod I2 extends through the body 6, centrally through the aperture I il, and is suitably secured to the body 6. A stop I3 on the upper end of the rod I2 limits the upper movements of a spreader head I4 centrally apertured to slide on the rod I2 toward and from the seat II.

Annular grooves I5 formed in the aperture I4 receive the split rings I6 which clamp the head I4 in any desired position of adjustment along the rod I2 with respect to the seat I I. The lower face of the head I4 is beveled to conform to the pressure of the liquid so that it leaves the head at an angle approximating 45 degrees from horizontal, or might correspond to the shape of the seat II.

The form of the invention shown in Figures 4 and 5 comprises a body portion I1 adapted to be connected to one end of a stand pipe. The. body portion I'I merges at its upper end into a restricted portion I8, which operates to secure an even distribution of water around a rod I9 which acts as a support for a spreader head 20 similar to the head i3 of the form shown in Figure 2 of the drawing. The rod I 9 is screwthrevaded atits lower end to seat in the rhub 2| of a 5 spider 22 which may be cast integral with the body portion Il. The upper end of the rod I9 has an annular iiange 23 formed thereon to act as a stop for limiting the outward movement of the spreader head 20. 10

The head 2t is provided with the annular grooves 2li in which are seated the split rings 25 which act as clamps on the rod I9 to secure the head 20 in any desired position of adjustment relative to the inclined seat 25 formed on the 15 upper end of the restricted portion I8. The lower face of the spreader head 20 is provided with an inclined face 2l to co-operate with the inclined seat Z6 in effecting the desired spread of .liquid through the sprinkler head. 20

The split ring connection between the valvedeiiectors lli and 2l) and their supporting rods provides a means whereby the valveA may be very quickly adjusted to diiierent positions with respect to the outwardly flared discharge aper- 25 ture. In addition to this feature of quick adjustment, the sliding frictional connection permits the valve to move automatically to relieve excess pressure which would otherwise cause rupture of the hose.

It is to be understood that the invention is not to be considered `as limited to the speciiic construction and arrangement described herein, since it is evident that many changes may be made Without departing from the scope of the invention as dened by the claim appended hereto.

What I claim is:

A spray nozzle comprising a main body adapted to be connected to a source of liquid supply, a restricted part connected to said main body, and provided with a discharge aperture, said aperture being outwardly iiared to provide a seat, a rod extending through said aperture and fixed to said body, a spreader head having a surface flared outwardly to correspond with the flare of said seat and having a bore in slidable contact with said rod, said bore being provided with an annular groove, and a split ring in said groove for clamping said spreader head in any 50 desired position oi adjustment on said rod.

HUGH BERTRAM PARKER. 

